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[wxWidgets.git] / src / gtk1 / spinbutt.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: spinbutt.cpp
3 // Purpose: wxSpinButton
4 // Author: Robert
5 // Modified by:
6 // RCS-ID: $Id$
7 // Copyright: (c) Robert Roebling
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
12 #pragma implementation "spinbutt.h"
13 #pragma implementation "spinbutbase.h"
14 #endif
15
16 // For compilers that support precompilation, includes "wx.h".
17 #include "wx/wxprec.h"
18
19 #include "wx/spinbutt.h"
20
21 #if wxUSE_SPINBTN
22
23 #include "wx/utils.h"
24
25 #include <math.h>
26
27 #include "wx/gtk/private.h"
28
29 //-----------------------------------------------------------------------------
30 // idle system
31 //-----------------------------------------------------------------------------
32
33 extern void wxapp_install_idle_handler();
34 extern bool g_isIdle;
35
36 //-----------------------------------------------------------------------------
37 // data
38 //-----------------------------------------------------------------------------
39
40 extern bool g_blockEventsOnDrag;
41
42 static const float sensitivity = 0.02;
43
44 //-----------------------------------------------------------------------------
45 // "value_changed"
46 //-----------------------------------------------------------------------------
47
48 static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win )
49 {
50 if (g_isIdle) wxapp_install_idle_handler();
51
52 if (!win->m_hasVMT) return;
53 if (g_blockEventsOnDrag) return;
54
55 float diff = win->m_adjust->value - win->m_oldPos;
56 if (fabs(diff) < sensitivity) return;
57
58 wxEventType command = wxEVT_NULL;
59
60 float line_step = win->m_adjust->step_increment;
61
62 if (fabs(diff-line_step) < sensitivity) command = wxEVT_SCROLL_LINEUP;
63 else if (fabs(diff+line_step) < sensitivity) command = wxEVT_SCROLL_LINEDOWN;
64 else command = wxEVT_SCROLL_THUMBTRACK;
65
66 int value = (int)ceil(win->m_adjust->value);
67
68 wxSpinEvent event( command, win->GetId());
69 event.SetPosition( value );
70 event.SetEventObject( win );
71
72 if ((win->GetEventHandler()->ProcessEvent( event )) &&
73 !event.IsAllowed() )
74 {
75 /* program has vetoed */
76 win->m_adjust->value = win->m_oldPos;
77
78 gtk_signal_disconnect_by_func( GTK_OBJECT (win->m_adjust),
79 (GtkSignalFunc) gtk_spinbutt_callback,
80 (gpointer) win );
81
82 gtk_signal_emit_by_name( GTK_OBJECT(win->m_adjust), "value_changed" );
83
84 gtk_signal_connect( GTK_OBJECT (win->m_adjust),
85 "value_changed",
86 (GtkSignalFunc) gtk_spinbutt_callback,
87 (gpointer) win );
88 return;
89 }
90
91 win->m_oldPos = win->m_adjust->value;
92
93 /* always send a thumbtrack event */
94 if (command != wxEVT_SCROLL_THUMBTRACK)
95 {
96 command = wxEVT_SCROLL_THUMBTRACK;
97 wxSpinEvent event2( command, win->GetId());
98 event2.SetPosition( value );
99 event2.SetEventObject( win );
100 win->GetEventHandler()->ProcessEvent( event2 );
101 }
102 }
103
104 //-----------------------------------------------------------------------------
105 // wxSpinButton
106 //-----------------------------------------------------------------------------
107
108 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
109 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxNotifyEvent)
110
111 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
112 EVT_SIZE(wxSpinButton::OnSize)
113 END_EVENT_TABLE()
114
115 bool wxSpinButton::Create(wxWindow *parent,
116 wxWindowID id,
117 const wxPoint& pos,
118 const wxSize& size,
119 long style,
120 const wxString& name)
121 {
122 m_needParent = TRUE;
123
124 wxSize new_size = size,
125 sizeBest = DoGetBestSize();
126 new_size.x = sizeBest.x; // override width always
127 if (new_size.y == -1)
128 new_size.y = sizeBest.y;
129
130 if (!PreCreation( parent, pos, new_size ) ||
131 !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
132 {
133 wxFAIL_MSG( wxT("wxXX creation failed") );
134 return FALSE;
135 }
136
137 m_oldPos = 0.0;
138
139 m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
140
141 m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
142
143 gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
144 (int)(m_windowStyle & wxSP_WRAP) );
145
146 gtk_signal_connect( GTK_OBJECT (m_adjust),
147 "value_changed",
148 (GtkSignalFunc) gtk_spinbutt_callback,
149 (gpointer) this );
150
151 m_parent->DoAddChild( this );
152
153 PostCreation();
154 InheritAttributes();
155
156 Show( TRUE );
157
158 return TRUE;
159 }
160
161 int wxSpinButton::GetMin() const
162 {
163 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
164
165 return (int)ceil(m_adjust->lower);
166 }
167
168 int wxSpinButton::GetMax() const
169 {
170 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
171
172 return (int)ceil(m_adjust->upper);
173 }
174
175 int wxSpinButton::GetValue() const
176 {
177 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
178
179 return (int)ceil(m_adjust->value);
180 }
181
182 void wxSpinButton::SetValue( int value )
183 {
184 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
185
186 float fpos = (float)value;
187 m_oldPos = fpos;
188 if (fabs(fpos-m_adjust->value) < sensitivity) return;
189
190 m_adjust->value = fpos;
191
192 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
193 }
194
195 void wxSpinButton::SetRange(int minVal, int maxVal)
196 {
197 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
198
199 float fmin = (float)minVal;
200 float fmax = (float)maxVal;
201
202 if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
203 (fabs(fmax-m_adjust->upper) < sensitivity))
204 {
205 return;
206 }
207
208 m_adjust->lower = fmin;
209 m_adjust->upper = fmax;
210
211 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
212
213 // these two calls are required due to some bug in GTK
214 Refresh();
215 SetFocus();
216 }
217
218 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
219 {
220 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
221
222 m_width = DoGetBestSize().x;
223 gtk_widget_set_usize( m_widget, m_width, m_height );
224 }
225
226 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
227 {
228 return GTK_SPIN_BUTTON(m_widget)->panel == window;
229 }
230
231 void wxSpinButton::ApplyWidgetStyle()
232 {
233 SetWidgetStyle();
234 gtk_widget_set_style( m_widget, m_widgetStyle );
235 }
236
237 wxSize wxSpinButton::DoGetBestSize() const
238 {
239 return wxSize(15, 26);
240 }
241
242 #endif